- Definitions|2
- Thesaurus|1.3k
- Abbreviations|0
181 entries under persistent topic. ×
| invincible(adjective, obstinate, insistent, dogged) | |
| persisting(adjective, strong, tough, firm, determined) | |
| perverse(adjective, mean, hard, tough, determined) | |
| true(adjective, strong, tough, firm, determined) | |
| unconquerable(adjective, obstinate, insistent, dogged) | |
| uncooperative(adjective, mean, hard, obstinate) | |
| unregenerate(adjective, hard, tough, harsh, cruel) | |
| vindictive(adjective, mean, hard, tough, severe) | |
| ardent(adjective, difficult, intense, resolute) | |
| cantankerous(tough, firm, obstinate, stubborn) | |
| confirmed(adjective, obstinate, insistent, dogged) | |
| contumacious(tough, firm, obstinate, stubborn) | |
| enduring(adjective, determined, steady, resolute) | |
| immutable(adjective, set, strong, hard, firm) | |
| insubordinate(tough, firm, obstinate, stubborn) | |
| intent(adjective, firm, intense, determined, serious) | |
| inveterate(adjective, obstinate, insistent, dogged) | |
| permanent(adjective, steady, constant, continuous) | |
| recalcitrant(tough, firm, obstinate, stubborn) | |
| refractory(tough, firm, obstinate, stubborn) |
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| APA | Smart Define. (2015). relentless thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/relentless/thesaurus/synonyms |
| Chicago | Smart Define. 2015. "relentless thesaurus" https://smartdefine.org/relentless/thesaurus/synonyms (accessed September 21, 2026). |
| Harvard | Smart Define 2015, relentless thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/relentless/thesaurus/synonyms>. |
| MLA | Smart Define. "relentless thesaurus" 24 June 2015. Web. 21 September 2026. <https://smartdefine.org/relentless/thesaurus/synonyms> |